User Manual

Chapter 5
5-19 ADAM 4000 Series User’s Manual
4011, 4011D, 4012, 4013,
4016, 4017, 4018, 4018M
$AA1
Name Offset Calibration command
Description Calibrates an analog i nput module t o c orrect for offset
errors.
Syntax $AA1(cr)
$ is a delimiter character.
AA (range 00-FF) represents the 2-character he xadecimal
address of the analog input module you want to calibrate.
1 is the Offset Calibration command.
(cr) is the terminating character, carriage return (0Dh).
Response !AA(cr) if the command is valid.
?AA(cr) if an invalid operation was entered.
There is no response if the module detects a syntax error or
communication e rror or if the s pecified a ddress does not
exist.
!
delimiter character indic ates a valid comm and was
received.
?
delimiter character indicates the command was invalid.
AA (range 00-FF) represents the 2-character he xadecimal
address of the analog input module.
(cr) represents terminating character, carriage return (0Dh).
In order to successfully calibrate an analog input module’s
input range, a pro per calib ration inp ut si gnal sh ould be
connected to the analog input module before and during the
calibration. (See also Chapter 8, Calibration)
NOTICE: An analog input module requires a maximum of 7 seconds to
perform auto calibration and ranging after it received an Offset
Calibration command. During this interval, the module can not
be addressed to perform any other actions.